Is Java Really Faster Than Go? Earlier I blogged that Go is better than Java. I wanted to start from some earlier work, to prove to my colleagues that Go is as fast as Java and quick to start up. Speed is critical for serverless since the process can be stopped.
Earlier I blogged that Go is better than Java, but it lacked evidence and datapoints. I wanted to start from some earlier work, to prove to my colleagues that Go is as fast as Java and quick to start up. Speed is critical for serverless since the process can be stopped when not in use and started again from cold to serve a request!
So after searching https://dzone.com/ for “Java Go” comparisons I was surprised to find a benchmark article by Ivan Nikitsenka (original author) at the top of results:
Which concluded that Java can serve twice as many simultaneous users as the Go application.
Is that true?! Can Java’s lazily just-in-time compiler be faster than a Go static binary?! Can I reproduce his results!?
To the original author’s credit, he publishes the source of his Java and Golang application as well as how he tested with Jmeter, his results AND how to run it all on a neutral playing ground of AWS via Cloudformation!
I ran it locally on my T14s Thinkpad and indeed the Go application was erroring compared to the “springboot” Java app. Despite the
bank-go image weighing in at 10.2MB compared to the 991MB image size of
bank-java and consuming a lot less resources whilst running:
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